Table 2. Mitochondrial density in guinea-pig tenia coli.
| Guinea-pigs | animal code | Number of muscle cells |
Number of mitochondria |
Spatial density of mitochondria |
| fetus, term | BMT | 83 | 170 | 2.87% |
| newborn | BQE | 31 | 96 | 2.84% |
| newborn | BRY | 64 | 138 | 3.08% |
| newborn | BQI | 74 | 254 | 3.05% |
| 4 day old | BQQ | 111 | 243 | 3.08% |
| 4.5 day old | BQH | 54 | 172 | 2.99% |
| 9 day old | BQK | 32 | 114 | 3.12% |
| 17 day old | BRQ | 50 | 162 | 3.46% |
| adult | BPK | 121 | 350 | 4.02% |
| adult | BPJ | 209 | 617 | 3.82% |
| adult | BQP | 75 | 307 | 3.84% |
| adult | BPW | 84 | 244 | 3.91% |
| adult | AJG | 148 | 451 | 3.99% |
| adult | AJH | 214 | 705 | 4.44% |
| adult | BIJ | 252 | 881 | 4.08% |
| aged (~2 year old) | BSJ | 55 | 246 | 3.67% |
| aged (~2 year old) | BSK | 267 | 778 | 3.52% |
| aged (~3 year old | BQT | 117 | 451 | 2.80% |
| aged (~3 year old) | BQZ | 46 | 212 | 2.75% |
Spatial density of 4,591, mitochondria in 2,087 muscle cell profiles from the tenia coli of guinea-pigs, from birth to old age. The three numerical columns give the number of muscle cell profiles measured, the number of mitochondria in those cell profiles, and the percentage area of the muscle cell cytoplasm occupied by those mitochondria.